/*
 * Copyright 2007-2009 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.paoding.rose.web.impl.mapping;

import net.paoding.rose.web.annotation.ReqMethod;
import net.paoding.rose.web.impl.thread.MatchResult;

/**
 * 
 * @author zhiliang.wang
 * 
 * @param <S>
 * @param <N>
 */
public class ModifiedMapping<S, N> implements Mapping<N> {

	private Mapping<S> src;
	private N newTarget;

	private ModifiedMapping(Mapping<S> src, N newTarget) {
		this.src = src;
		this.newTarget = newTarget;
	}
	
	public static <S, N> Mapping<N> changeTarget(Mapping<S> src, N newTarget){
		return new ModifiedMapping<S, N>(src, newTarget);
	}

	@Override
	public N getTarget() {
		return newTarget;
	}

	@Override
	public ReqMethod[] getMethods() {
		return src.getMethods();
	}

	@Override
	public String getPath() {
		return src.getPath();
	}

	@Override
	public MatchResult<N> match(String path, String requestMethod) {
		return MatchResult.changeMapping(src.match(path, requestMethod), this);
	}

	@Override
	public int compareTo(Mapping<?> o) {
		if (o instanceof ModifiedMapping) {
			return src.compareTo(((ModifiedMapping<?, ?>) o).src);
		}
		return src.compareTo(o);
	}

	@Override
	public String toString() {
		return src + " ->target: " + newTarget;
	}

}
